The Cutter Bit,tool Holder, cataloged under National Stock Number 3455-00-540-1087, is classified within Federal Supply Class 3455 (Cutting Tools for Machine Tools) of the Metalworking Machinery (continued) group. The manufacturer of record is Kennametal Inc.. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3455-00-540-1087 |
| Primary Part Number | AR-66 |
| Item Name | Cutter Bit,tool Holder |
| FSC / FSG | 3455 / 34 — Cutting Tools for Machine Tools |
| Manufacturer | Kennametal Inc. |
| Status | ACTIVE |
| Overall Thickness | 0.750 INCHES NOMINAL IN |
| Shape | RECTANGULAR |
| Material Location | TIP |
| Material Type for Which Designed | NONFERROUS METAL |
| Specification/standard Data | 80204-B212.1 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Edge Type | RIGHT HAND TURNING |
| Unable to Decode | UNABLE TO DECODE |
| Material | CARBIDE |
| Cutting Edge Finish | GROUND TO SHAPE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| AR-66 PRIMARY | Kennametal Inc. (USA) |
| Reference | Meaning |
|---|---|
| B212.1 FIGURE 3 AR-66 | 3/1 Design control — primary reference U.S. Government activity |
NSN 3455-00-540-1087 is a Cutter Bit,tool Holder, manufactured by Kennametal Inc., classified under FSC 3455, Cutting Tools for Machine Tools. Status: active.
NSN 3455-00-540-1087 has 1 manufacturer part number on file: AR-66 (Kennametal Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5999-01-439-6904. Verify interchangeability with system specifications before substitution.
Key specifications for AR-66: Overall Thickness: 0.750 INCHES NOMINAL IN; Shape: RECTANGULAR; Overall Length: 8.000 INCHES NOMINAL IN; Overall Width: 1.500 INCHES NOMINAL IN. 9 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.